Raghav Gupta is was a research scientist at eBay Research Labs .  You can find more detail on his work there at http://labs.ebay.com/raghavgupta/.

While not trying to solve the mystery of intelligence,  his primary activities range from building robots using lego mindstorms, to complex origami models using paper. For some reason he seems to be obsessed with all things spatially complex. It’s a curse.

As of October 13, 2008, Raghav Gupta has quit eBay to focus on his latest venture. Check it out at http://www.geoterrestrial.com/